The role of the camera
Camera (or webcam), also known as computer camera, computer eye, electronic eye, etc. Is a video input device, widely used in video conferencing, telemedicine and real-time monitoring and other fields. Ordinary people can also have video and audio conversations and exchanges through the cameras on the network.
The working principle of the camera is roughly. The optical image produced by the lens of the scene is projected on the surface of the image sensor, and then converted into an electrical signal, which is converted into a digital image signal after A/D (analog-to-digital conversion) conversion, and then sent to a digital signal processing chip (DSP) for processing, and then transmitted to a computer for processing through a USB interface, and the image can be seen through a display.